<template>
  <view>
    <view class="goods-list">
      <view v-for="(goods, i) in goodslist" :key="goods.goods_id" @click="gotoDetail(goods)">
        <my-goods :goods="goods"></my-goods>
      </view>
    </view>
  </view>
</template>

<script>
  export default {
    data() {
      return {
        // 请求参数对象
        queryObj:{
          query: '',
          cid: '',
          pagenum: 1,
          pagesize: 10
        },
        // 商品列表数据
        goodslist: [],
        // 总数量,用来实现分页
        total: 0,
        // 节流阀
        isloading: false
      };
    },
    onLoad(options) {
      this.queryObj.query = options.query || ''
      this.queryObj.cid = options.cid || ''
      this.getGoodslist()
    },
    methods: {
      // 获取商品列表数据
      async getGoodslist(cb) {
        // 打开节流阀
        this.isloading = true
        const {data:res} = await uni.$http.get('/api/public/v1/goods/search',this.queryObj)
        // 关闭节流阀
        this.isloading = false
        
        // 数据请求完毕后,关闭下拉刷新
        cb && cb()
        
        if (res.meta.status !== 200) return uni.$showMsg()
        // 新旧数据拼接
        this.goodslist = [...this.goodslist, ...res.message.goods]
        this.total = res.message.total
      },
      gotoDetail(goods) {
        uni.navigateTo({
          url: '/subpkg/goods_detail/goods_detail?goods_id=' + goods.goods_id
        })
      }
    },
    
    // 上拉触底
    onReachBottom() {
      // 判断是否还有下一页数据
      if (this.queryObj.pagenum * this.queryObj.pagesize >= this.total) return uni.$showMsg('数据加载完毕！')
      if (this.isloading) return
      // 页码值自增加1
      this.queryObj.pagenum++
      this.getGoodslist()
    },
    // 下拉刷新
    onPullDownRefresh() {
      // 重置关键数据
      this.queryObj.pagenum = 1
      this.total = 0
      this.isloading = false
      this.goodslist = []
      
      // 重新发起请求
      this.getGoodslist(()=>uni.stopPullDownRefresh())
    }
  }
</script>

<style lang="scss">

</style>
